Which tone and style is most appropriate for an audience of students and parents?

come on people: let's work together to get it done right!
all members of our school family play an important role in student success.
we can't succeed without cooperation from teachers and staff.
the amount of effort you put in will determine how successful you will be.

One of the author's purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with enormous speed mark this and return save and exit next submit